A Manual of Chemistry, Vol. 2 of 2

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Excerpt from A Manual of Chemistry, Vol. 2 of 2: Containing the Principal Facts of the Science, Arranged in the Order in Which They Are Discussed And, Illustrated in the Lectures at the Royal Institution of Great Britain The common ore of manganese is the black or peroxide, which is found in considerable abundance, and is of important use in the arts: this metal also occurs in a few animal products, and is not uncommonly discovered in the ashes of vegetables. Particular attention was first directed to the black oxide of manganese by Schccle in 1774, and shortly afterwards Gahn found that it contained a peculiar metal, which he first called magnesium, but which was afterwards termed Manganese. In sonic respects it resembles the metals already described, in others, it is eminently different. Like them, it has a powerful attraction for oxygen, speedily attracting it from air and water, and its oxides are extremely difficult of decomposition: they have, however, nothing in common with alkaline bodies, and manganese, in its highest state of oxydizement, constitutes an acid. To obtain metallic manganese, the carbonate of manganese may In mixed into a paste with oil, and subjected to In. at gradually raised to redness, in a glass or earthen retort. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.